The Cover,access, cataloged under National Stock Number 5340-01-421-7507, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-421-7507 |
| Primary Part Number | S1503BC |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Bolt Circle Hole Quantity | 4 |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | FLAT |
| Securing Device Type | SPECIAL |
| Bolt Circle Diameter | 2.1300 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Hole Diameter | 0.3437 INCHES NOMINAL IN |
| Body Thickness | 0.4400 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| S1503BC PRIMARY | Circor Pumps North America Llc (USA) |
NSN 5340-01-421-7507 is a Cover,access, manufactured by Circor Pumps North America Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-421-7507 has 1 manufacturer part number on file: S1503BC (Circor Pumps North America Llc).
Key specifications for S1503BC: Bolt Circle Hole Quantity: 4; Mounting Opening Shape Style: UNTHREADED HOLE; Cross-Sectional Shape Style: FLAT; Securing Device Type: SPECIAL. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.